In the bearing, we know steel bearings, magnetic bearings, ceramic bearings, air bearings, then this kind of plastic bearings. Look at what kind of plastic bearings have it? A. Precision Plastic BearingsPrecision plastic bearings, plastic bearings than traditional improvement in the precision and tolerances. The overall use of precision machining of materials suitable for inner and outer ring, ball and cage, while maintaining the traditional advantages of plastic bearings,